ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,209, issued on Nov. 11, was assigned to NIKON Corp. (Tokyo).
"Ophthalmic optical system and ophthalmic device" was invented by Hiroaki Nakayama (Kawasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ophthalmic optical system for observing an subject eye, including: an objective optical system that forms a pupil that has a conjugate relationship with a pupil of the subject eye, wherein, given that a distance from a pupil position that has a conjugate relationship with the pupil of the subject eye to the pupil of the subject eye is L, and a sum of central thicknesses of lenses included in the objective optical system is D, a conditional ex...